yet some experts are more hopeful. They point out that food production has been vastly increased in some parts of the world by the use of efficient farming methods, including the use of chemical pesticides and fertilizers. they also point to the research that is being carried out into the development of types of food that have hardly been used up to now. for instance, it is possible for human beings to eat food that has been made from leaves and grass. it may not look or taste very good, but it could save millions of people from starvation.